linux-kernel - Re: [PATCH v3] cpufreq: scmi: Account for malformed DT in scmi_dev_used_by

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Message-ID: <20250819053048.t3dfmyu2xqd4ypef@vireshk-i7>
Date: Tue, 19 Aug 2025 11:00:48 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Florian Fainelli <florian.fainelli@...adcom.com>
Cc: linux-kernel@...r.kernel.org, Sudeep Holla <sudeep.holla@....com>,
	Cristian Marussi <cristian.marussi@....com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Mike Tipton <quic_mdtipton@...cinc.com>,
	Peng Fan <peng.fan@....com>, arm-scmi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v3] cpufreq: scmi: Account for malformed DT in
 scmi_dev_used_by_cpus()

On 18-08-25, 08:50, Florian Fainelli wrote:
> Broadcom STB platforms were early adopters (2017) of the SCMI framework and as
> a result, not all deployed systems have a Device Tree entry where SCMI
> protocol 0x13 (PERFORMANCE) is declared as a clock provider, nor are the
> CPU Device Tree node(s) referencing protocol 0x13 as their clock
> provider. This was clarified in commit e11c480b6df1 ("dt-bindings:
> firmware: arm,scmi: Extend bindings for protocol@13") in 2023.
> 
> For those platforms, we allow the checks done by scmi_dev_used_by_cpus()
> to continue, and in the event of not having done an early return, we key
> off the documented compatible string and give them a pass to continue to
> use scmi-cpufreq.
> 
> Reviewed-by: Sudeep Holla <sudeep.holla@....com>
> Fixes: 6c9bb8692272 ("cpufreq: scmi: Skip SCMI devices that aren't used by the CPUs")
> Signed-off-by: Florian Fainelli <florian.fainelli@...adcom.com>

Applied. Thanks.

-- 
viresh